Overview of the Spam Quarantine
The spam quarantine (also known as ISQ, End-User Quarantine, and EUQ) provides a safeguard mechanism for organizations that are concerned about “false positives” — that is, legitimate email messages that the appliance has deemed to be spam. When the appliance determines that a message is spam or suspected spam, you may want to let the recipient or an administrator review the message before delivering or deleting it. The spam quarantine stores messages for this purpose.
Administrative users of the Email Security appliance can view all messages in a spam quarantine. End users, usually the message recipients, can view their own quarantined messages in a slightly different web interface.
The spam quarantine is separate from policy, virus, and outbreak quarantines.